Seiko Cal. 5643 - 366

This Automatic model from 1968 features a 45mm Titanium case. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-7698f7cf9fec]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1968

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